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时间:2020-05-18
《微流控法制备可用于电泳显示微胶囊的微液珠研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、华南师范大学学报(自然科学版)2015,47(3):19—23JournalofSouthChinaNormalUniversity(NaturalScienceEdition)doi:10.6054/j.jSCDHD.2015.03.016微流控法制备可用于电泳显示微胶囊的微液珠研究朱云飞,水玲玲,周国富,金名亮(1.华南师范大学华南先进光电子研究院,彩色动态电子纸显示技术研究所,广州510006;2.深圳市国华光电科技有限公司,深圳518110)摘要:基于微流控技术,提出一种制备电泳显示液微胶
2、囊的新方法,解决了传统电泳微胶囊制备方法中颗粒粒径不均匀、影响显示器件的显示性能及其驱动波形设计等问题.使用2种玻璃汇聚流通道(小型和大型),外相溶液为1.5%明胶阿拉伯胶混合溶液,内相为四氯乙烯溶液.当小型通道和大型通道外相溶液流速与内相溶液体积流速比分别为2:1和10:6时,可得到液滴平均直径分别为47p,m和315m的均匀的微液珠.同时,通过调节内外相流速可以精确控制微胶囊粒径大小.与传统机械搅拌法制备的微液珠(52±18.81m)相比,微流控法制备的微液珠(45±0.28m)粒径分布得到了
3、很大改善.该方法为电泳显示器显示效果的改善提供了可行方法.关键词:电泳显示器;微胶囊;微流控;粒径分布中图分类号:TN27;TP6文献标志码:A文章编号:1000—5463(2015)03—0019一O5MicrofluidicFabricationofMonodisperseMicrodropletsforElectrophoreticDisplayApplicationsZhuYunfei,ShuiLingling,ZhouGuofu,JinMinghang(1.InstituteofElec
4、tronicPaperDisplays,SouthChinaAcademyofAdvancedOptoelectronics,SouthChinaNormalUniversity,Guangzhou510006,China;2.ShenzhenGuohuaOptoelectronicsTech.Co.Ltd.,Shenzhen518110,China)Abstract:Anovelmethodofcreatingmonodispersemicrodropletsforelectrophoretic
5、displaymicrocapsulesapplica—tionisintroduced.Themicrocapsulesfabricatedbycommonagitationarelackofuniformity,whichresultindiffi—eultyindrivingwaveformdesign.Inthisreport,thenalTowdistributedmicrodropletsofEPDmaterialsusingtwotypesofmicrochannelwiththeo
6、uterphaseof1.5%gelatinandArabicgumsolutionandtheinnerphaseoftetra—chloroethylenearefabricated.Controllingtheflowrateratiooftheinnertoouterphaseat2:1(smallchanne1)and10:6(bigchanne1),monodispersemicrodropletswithdiameterof47Ixmand315mareobtained,respec
7、tively.Atthesametime,thesizeofthemicrodropletcouldbepreciselycontrolledbythefluidicflowrates.Thesizedistri—butionofthemicrodropletsfabricatedbymicrofluidicchannelswas(45±0.28)mwhichwashighlyimprovedcomparingtothedropletscreatedbyagitationwiththesizeof
8、(52±18.81)m.Thisimpliesthatthemicrofluidicsisareliabletechnologywhichwouldbeafeasiblewaytoimprovethequalityandperformanceoftheelectrophoreticdisplays.Keywords:electrophoreticdisplays;microcapsules;microfluidics;sizedistributionSheridon率先提出电子纸和
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